Donkey Calf Raise attachment Quick ConnectBlind

in Mechanical Engineering held by Achilles
Contest Ended, Winner(s) have been selected.
  • Open
  • Choosing Finalist
  • Ended
Description:
This contest is to design a fast way to connect and disconnect the Donkey Calf Raise attachment to various size smith machine barbell shafts. The Donkey Calf Raise attachment is a patented apparatus that can be attached to the smith machine barbell to perform the donkey calf raise exercise. The current design will not attach to all smith machine barbell shafts. I need a new quick way for the apparatus to attach to a 25mm to 35mm diameter smith machine barbell shaft.

Please see attached 3D STEP file, Inventor assembly & part files and AutoCAD 3D file. Attached also are images on how to perform the donkey calf raise exercise.
Wants:
• A quick connect and disconnect to a smith machine barbell shaft
• Commercial grade construction
• Must be very durable to withstand constant use
• Modern looking design
• It should be able to fit 25mm to 35mm diameter smith machine barbell shafts.
• Material: Aluminum
• All Designs will be 3D Solid Models
Don't Wants:
• Do not change the overall design; just change the way it connects to the smith machine barbell
• We do not want overly complex designs that are difficult to manufacture. Keep it simple
Software:
  1. Software that can be used: • Autodesk Inventor, Pro Engineer, SolidWorks, Solid Edge, Catia, Unigraphics

Entries

= Buyer's Rating
1st Winner
#64 Donkey Calf Raise attachment Quick Connect AD002 - by Adriano Barissa by Adriano Ordoz Barissa
May 27, 2019 1:41
#51 Donkey Calf Raise with bit longer presing piece by walxo
May 23, 2019 16:38
#74 Very simple adaptive design for any bar. by walxo
May 28, 2019 11:22
#68 Donkey Calf Rise -2 points pressing - video by walxo
May 27, 2019 10:37
#67 Donkey Calf Rise Two point Pressing by walxo
May 27, 2019 9:28
#48 Donkey_Calf_Raise_attachment_Assembly -dismountable compound by walxo
May 23, 2019 11:10
#50 Donkey Calf Raise with barbells protector STEP by walxo
May 23, 2019 14:24
#15 Donkey Calf Raise attachment Quick Connect by REDA
May 5, 2019 16:38
#37 Donkey Calf Raise attachment Quick Connect by REDA
May 19, 2019 21:05
#35 Donkey Calf Raise attachment Quick Connect by REDA
May 18, 2019 23:45
#61 DCRA V1.0 by KP HARISANKAR
May 26, 2019 18:58
#63 Donkey Calf Raise attachment Quick Connect - Practical by sherifelsheikh
May 26, 2019 22:31
#9 DCRA _rev_01 by andry
May 3, 2019 3:24
#12 Clamper eccentric by Trie
May 4, 2019 18:14
#13 Donkey Calf Raise attachment Quick Connect by REDA
May 4, 2019 20:22
#8 Donkey Calf Raise attachment Quick Connect by REDA
May 2, 2019 21:23
#5 RAPID CLAMP II by Bruno CADET
Apr 30, 2019 14:01
#7 DCRA by andry
May 2, 2019 13:38
#52 Donkey Calf Raise attachment Quick Connect by Sheref
May 23, 2019 18:30
#20 modification for clasping a range of barbell diameters by Jeremy Benjamin
May 6, 2019 5:44
#16 Amovibles seals by Bruno CADET
May 5, 2019 18:32

Discussion

Mon, 20 May 2019 20:16:01 +0000
Hey CH,
Regarding the interface between the shaft and the DCRA connection, does the DCRA rotate around the shaft or will it be fixed i.e not rotate at all? Thanks.

Achilles

Buyer

Sun, 19 May 2019 05:54:49 +0000
Designer, I have received some good designs but nothing that I would call a winner yet. Let’s keep in mind what this device will be used for. It will be used in a commercial gym. This means that the device will be used quite often and it must be very durable. Also, the attachment clamp must be easy to take off and on the barbell. It must be able to clamp around a 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, and 35mm barbell shaft.
You must also think about how this device will be manufactured.

Achilles

Buyer

Wed, 08 May 2019 15:40:17 +0000
There is also A 3D STEP file attached.

Abid Yusuf

Designer

Wed, 08 May 2019 13:30:57 +0000
can you please upload the files with an extension other than .ipt, solidworks is having trouble identifying the files.

Achilles

Buyer

Tue, 07 May 2019 15:28:48 +0000
Designers, the new design must be able to attach to 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm and 35mm barbell shafts.

Achilles

Buyer

Sat, 04 May 2019 15:43:55 +0000
Designers,
I want the new connection design to be quick. No threads. Threads take too long to take off and on.

Fadi Sayegh

Designer

Wed, 01 May 2019 13:05:02 +0000
could you upload all fill that you attachment than I can open them on SOLIDWORKS. some files need inventor software to open

Achilles

Buyer

Tue, 30 Apr 2019 13:26:34 +0000
rhınoceros can work
Tue, 30 Apr 2019 13:15:04 +0000
ıs rhınoceros work ?
Tue, 30 Apr 2019 04:13:27 +0000
The specification 25mm to 35mm barbell... am I to understand that there are only 2 sizes, 25 and 35? or are there sizes in between?
Tue, 30 Apr 2019 03:18:41 +0000
Hi, must the clamp tightly grip the barbell shaft? I measure the current design diameter is 28mm.

Achilles

Buyer

Mon, 29 Apr 2019 21:20:24 +0000
Designers please make sure that your design quick connect will accommodate a 25mm to 35mm diameter smith machine barbell shaft.

Thanks,
Fabian

Achilles

Buyer

Mon, 29 Apr 2019 17:23:12 +0000
Designers, when submitting ideas; please submit JPG images.

Thanks,
Fabian

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